Yeah the NSWelsmen on here get pissy when I bring up all the premierships so I stick to the first grade ones... Which they still get pissy about, but, as you well know good sir, facts are that QRL / BRL was first grade equal to NSWRL when the Phins won in 1965 and 1994.
Clubs can claim whatever they want to make them feel good.
Same way Port Adelaide can claim their 30-odd SANFL premierships.
As long as the NRL doesn't recognise them, they can be counted separately but not together and you can sit back and argue with the Storm and dragons fans till the cows come home.
Meanwhile ill sit here and hope they dont strip 1997 from the Knights. We're just lucky they count that as a full premiership when it was only against half a comp.
IMO it'd save a hell of a lot of arguments if the NRL just did it like the NFL, and drew a line in the sand. Whether that's 1995 or 1998 is probably up for debate. Everything prior to that can be claimed as "pre-national competion" premierships like the pre-merger NFL/AFL championships.
But given the Sydney centric nature of the competition I dont think its going to happen any time soon.